Governing mechanism for steam-engines.



W. RAYMOND.

GOVERNING MECHANISMYFOR STEAM ENGINES.

APPLICATION FILED 1uLY13, 1914.

1,177,895. Patented Apr. 4, 1916.

3 SHEET8-SHEET I.

Fig. 1.

y Y N wi/immw: 6] woo/whom $1. woweg THE COLUMBIA PLANOGRAPH C0-.YWA\SHXNGTON, D. c.

W. RAYMOND.

GOVERNING MECHANISM FOR STEAM ENGINES.

APPLICATION FILED JULY I3, I9I4- I 1,177,895. Patented Apr.4, 1916.

3 SHEETS-SHEET 2 THE COLUMBIA PLANOGRAPH (10., WASHINGTON, D. c.

W. RAYMOND.

GOVERNING MECHANISM FOR STEAM ENGINES.

APPLICATION FILED JULY I3. I9I4- 1,177,895. Patented Apr. 4, 1916.

3 SHEETS-SHEET 3.

IIIII QXN/Ime/am: I 3 mm n-Iioz THE COLUMBIA PLANOGRAPH c0.. WASHINGTON,u. c.

UNITED srn'rns Parana orrron.

WARD, RAYMOND, OF EASION, PENNSYLVANIA, ASSIGNOR TO INGERSOLL-RANDCOMPANY, OF JERSEY GITY, NEW JERSEY, .A CORPORATION OF NEW JI'ERSEY.

GOVERNING MECHANISM FOR STEAM-ENGINES.

j 1 177 895 Specification of Letters Patent. Patented Apr, 4 1916,

' Application filed July 13, 1914. Serial No. 850,547.

To all whom it may concern herein, but such as shown, for instance, .in

Be it known that I, WARD RAYMOND, a the patent to Lentz, #659,892 datedOctocitizen of the United States, residing at her 16,1900. Mountedparallel to the axis Easton, in the county of Northampton and of thecylinder is an eccentric shaft 4 which State of Pennsylvania, haveinvented a ceris rotated through a rod 5 by a connection, 60

tain new and useful Improvement in Govnot shown, from the main shaft ofthe en erning Mechanism for Steam- Engines, of gine. Mounted on theshaft 4 are two pairs which the following is a specification. ofeccentrics, discharge valve controlling ec- This invention relates togoverning mechcentrics 6 which are fixedly mounted eccenanism for steamengines, and more particutrically to the shaft, and inlet controllingec- .65 larly to governing mechanism'for steam encentrics 7 which areadapted to slide in-, gines of the puppet valve type. wardly andoutwardlyon eccentrically ar- Under ordinaryoperating-conditions theranged squared portions 8 of the shaft to governing of steam engines iseffected by vary the throw of the valve and hence the fly ball governorsor similar devices which amount of intake. Projecting from the'in- 1710open or shut the valves according to the nor facesof the eccentrics 7are lugs 9 to load, there 'being comparatively little variawhich arepivoted short links 10 which are, tion'inthe'speed of the engine. Undersome in turn, pivotally secured to arms 11 of bell conditions, however,such, for instance as crank levers 12. The bell crank levers 12 2.0encountered in driving compressors and are fulorumed on pins 13 securedin lugs 14 a. pumps, the speed of the driving engine must projectingfrom the shaft 4. Slidably vary through a wide range. Under such-mou-nt'ed in the interio-rof the shaft is an conditions governors ofthe fly ball type are operating. rod 15 for actuating the. bell notsatisfactory, although various methods crank levers 12, the rod 15having toothed 2 5 of'modifying the action of the fly ball gov-'portions Men-gaging toothed sections 17 on. 80

ernor by means of the compressor discharge the inner arms of thebellcrank'levers 12.

:linepressure have been used with some suc- The rod 15 is extendedaxially of the shaft cess'in connection with steam valves ofthe 4 into astationary motor casing 18 which Corliss and Meyer types. abuts againstthe end bearing 19 of the I The object of the present invention is toshaft. At the extreme end of'the'rod 15 isj'8 provide a governingmechanism particularly a collar oiflange 20 which rotates in aconadapted for use with steam engine valves of plin-g nut 21 whichis-attached to a longitu- -the puppet type, whichwill enable the endinaloperating stem 22. The stem 22 is :gine to be successfully operatedthrough a moved inwardly by means of a piston 23 Q wide range of speeds.WVith this object in sliding in a cylinder 24 and is moved out- .1 9D

view, a regulating mechanism has been dewardlyby a spring 25 pressingagainst a vised, a practicalembodiment of which is head 26 secured tothe stem 22. Oil is adshown in the accompanying drawings, in (mitted andexhausted from the cylinder 24 which, p 'tomove' thepiston-23, through apipe 27 .40 Figure 1 shows a plan view of a steam which leads to thegovernor proper. cylinder provided with :a governing mecha- Consideringthe operation of the parts nism designed to be controlled by the speedwhich have been described: lVhen oil is adand discharge line pressure ofan air committed to the cylinder 24 the piston 23 will :p-ressor, Fig.2' shows av longitudinal section be moved inwardly moving the stem 22and Y. #45011 a larger scale through thexeccent-ric shaft, the couplingnut 21 against the resistance of 1 Fig.- 3 a side elevation partlyiii-section of the spring 25. The movement of the couthe end of theeccentric shaft and the govplin-g nut 21 will cause a correspondinglonernor proper, Fig. 4 a transverse section gitudinal movement of therod '15 without through the governor on the line 55 of affectingjitsrotation in any 'way. This lon- 450 Fig. 2, and Fig. 5 a detail viewshowing the gitudinal movement of the rod 15 will be connection of thefollow up lever of the 'govtransmitted through the bell crank levers 1'2ernor pilot valve. and the links 10 to the eccentrics 7 moving In thedrawings is shown a steam cylineach of these eccentrics inwardly towardthe -der.1, provided :Wltllll'lltfVEllVt-ES 2;and excenter of the shaftand thus reducing'the admission. The escape of fluid from the cylinder24 will produce the reverse effect allowing the rod 15 to moveoutwardly, which will have the effect of increasing the eccentricity ofthe eccentrics and hence the amount of steam admission The constructionand operation of the governor here shown which controls the admissionand exhaust of oil frcmthe cylinder 24 is fully described in thecopending application of Jones and Treiber, Serial No. 842,146, filedJune 1, 1914, and will be only briefly here described.

The governor consists essentially of a casing 28 divided into threechambers 29, 30 and 31. Oil is pumped into the chamber 29 through a pipe32 which leads from the discharge of an oil pump 33 operated by achainfrom the shaft 4 and the speed of which, therefore, varies with thespeed of the engine. From the chamber 29 the pipe 27 leads to thecylinder 24,- while from the chamber 31a discharge pipe 35 leads to theintake of the pump 33.

Under normal conditions the oil passes from the chamber 29 to thechamber 30 through passage 36 and from thence to the chamber 31' throughthe adjustable aperture 37, a small part of the oil also passingdirectly from chamber 29 to chamber 31 through the adjustable aperture38. The flow through the apertures 37 and 38 under full load conditionsis just equivalent to the amount of fluid discharged from the oil pump33 at the engines maximum speed. If the speed of the engine exceeds thismaximum, oil will pass from the chamber 29 through the pipe 27 to thecylinder 24 moving the rod 15 inwardly and cutting off the steamadmission the necessary amount. The flow of oil through the passage 36is, however, controlled also by the pilot valve 39 which is controlledby the pressure in the compressor receiver in the following manner: Fromthe receiver of the compressor, (not shown), a pipe 40 leads to thelower end ofthe cylinder 41 in which slides a piston 42 having aprojecting stem 43. The stem 43 engages a lever 44 which is so balancedby means of a weight 45 and a spring 46 that it will allow the piston 42to move upwardly at a certain predetermined. pressure in the receiver.Pivoted to this lever 44 is a bell crank lever 47. To one arm of thelever 47 is linked the valve 39,

while to the other arm is linked a follow up lever 48, the lower end ofwhich is fulcrumed on a pin 49 onthe casing 28 and the upper end ofwhich is secured by a yoke 50 and pin 51 to the stem 22 which operatesthe rod 15. \Vhen the pressure in the compressor receiver reaches anamount predetermined by the balance of thelever 44 the piston 42 willmove upwardly raising the lever 44 and the valve 39 and shutting offtheflow of oil through the passage 36. The escape of the oil being thusprevented it will pass through the pipe 27' to the cylinder 24 and movethe piston 23 and the rod 15 inwardly cutting down the speed of theengine. The movement of the piston 23 will, however, be transmitted backto the valve 39 to again open erning mechanism furnishing a supply offluid varying with the load on the engine could be used for operatingthe piston 24,

and it is to be understood that while they present showing anddescription disclose only one specified modification of the invention,other forms and modifications are in cluded in the spirit and scope ofthe inven tion as expressed in the claims.

What I claim is 1. In a steam engine governing mechanism, a shaft, valveoperating eccentrics movably mounted on said shaft, a fluid operatedmotor operatively connected with said eccentrics, and means forsupplyingfluid to said motor in accordance with the load on the engine.

2. In a steam engine governing mechanism, a shaft, valveoperatingeccentrics movably mounted on. said shaft, levers to move saideccentrics, an operating rod for moving said levers extendinglongitudinally of said shaft, a fluid operated motorfor moving said rod,and means-for supplying fluid to said motor in accordance with the loadon the engine.

3. In a steam engine governing mechanism, a shaft, valve operatingeccentrics on said shaft, an eccentric controlling rod extendinglongitudinally of said shaft, means to transmit longitudinal movement ofsaid rod to vary the throw of said eccen trics, a fluid operated motorfor moving said rod, and means forsupplying fluid to said motor inaccordance with the load on the engine.

4. In a steam engine governing mechanism, a hollow rotatable shaft,eccentrics movably mounted on said shaft, valve rodsoperated by saideccentrics, an eccentric opcrating rod extending longitudinally axiallyof said shaft, and having operative connections with said eccentrics tovary their throw, a fluid operated motor for moving said rod, and meansfor supplying fluid to said motor in accordance with theload on theengine. 7

5. In a steam engine governing mechanism, a. rotating eccentric shaft,.carryinglSO valve operating eccentrics sliding transversely thereon,levers pivoted in said shaft and linked to said eccentrics, a leveroperating rod sliding longitudinally inside of said shaft, means to movesaid levers from said rod, a fluid operated motor for moving said rodand means to admit fluid to said motor in accordance with the load onthe engine.

6. In a governing mechanism for steam engines, an eccentric carryingshaft having eccentric squared portions, valve operating eccentricssliding on said squared portions, bell crank levers pivoted in saidshaft each having one end linked to said eccentrics and the otherprovided with a toothed portion, a rod sliding longitudinally of saidshaft and having teeth thereon engaging said toothed portions of saidbell crank levers, a stationary fluid motor for moving said rodlongitudinally of said shaft having a rotary connection with said rodand means to admit fluid to said motor in accordance with the load onthe engine.

7. In "a steam engine governing mechanism, a hollow rotatable shaft,eccentrics movably mounted on said shaft, valve rods operated by saideccentrics, an eccentric operating rod extending longitudinally axiallyof said shaft, and having operative connections with said eccentrics tovary their throw, a motor for operating said rod comprising a stationarycylinder mounted coaxially with said shaft and having a piston slidingtherein, a swivel connection between said piston and said eccentricoperating rod, resilient means to move said piston in one direction, andmeans to admit fluid to said cylinder to move said piston in the otherdirection an amount varying with the load on the engine.

In testimony whereof, I have hereunto set my hand.

WARD RAYMOND.- Witnesses:

CARL W. OMAN, HARRY L. VAN BILLIARD.

Copies of this patent may he obtained for five cents each, by addressingthe "Commissioner of Patents, 7

Washington, D. G.

